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2) Networked audio systems

2.2 Audio formats

Although with the introduction of electronic instruments the input can also be an electrical analogue or digitally synthesised signal, in this white paper we will assume all inputs and outputs of an audio system to be acoustic signals. In the field of professional audio, the following identification is used for different formats of audio:

table 202: audio formats

format description
acoustic audio signals as pressure waves in air
analogue audio signals as a non-discrete electrical voltage
digital audio signals as data (eg. 16 or 24 bit - 44.1, 48, 88.2 or 96kHz)
networked audio data as streaming or switching packets (eg. Ethernet)

A networked audio system includes these audio formats simultaneously - using specialised components to convert from one to another:

table 203: audio format conversion components

source format destination format component
acoustic -> analogue microphone
analogue -> digital/networked A/D converter
digital/networked -> analogue D/A converter
analogue -> acoustic loudspeaker

>>2.3 Audio System Components

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